file1.txt :
india pakistan bangladesh
japan canada africa
USA srilanka Nepal
file2.txt
Delhi
Tokyo
washington
I have to cut the first column of file1.txt and apend it with file2.txt as another column like this
Delhi india
Tokyo japan
washington USA
... (4 Replies)
Hi, I have a file with the following data
-0.00000 0.00000 0.00000 F F F
0.00000 0.00000 0.80000 F F F
0.50000 0.50000 0.60000 F F F
0.50000 0.50000 0.20000 F F F
-0.00000 0.00000 0.40000 F F F
I would like to change the last 3 lines from F F F to T T T. I tried looping each line but don't... (5 Replies)
I have a Transaction File coming into the system. In this file, in all records the relevant data is as follows-
Position 1:10 -> Transaction Code
Position 252:255 -> 4 digit business code
Now based on these 2 fields I have to alter value in Transaction code (Position 1:10)... (6 Replies)
Input file
>Read_1
XXXXXXXXXXSDFXXXXXDS (condition 1: After the last "X" per line, if the distance is less than or equal to 3 letter, replace those not "X" letter with "X")
TREXXXXXXXSDFXXXXXDS (condition 2: Before the first "X" per line, if the distance is less than or equal to 3 letter,... (12 Replies)
Hi All,
how can i edit my original data and add more data if my 2nd script outputs SUCESS?
ex.
input file:
1.txt
nik,is,the
1script.sh
if 2ndscript.sh output SUCCESS then i'm going to edit my input file and add data best,pogi..
sample outputdata.
nik,is,the,best,pogi
2ndscript.sh... (3 Replies)
Legends,
I have following entries in a file.
I want to toggle the entry of 2nd column. TRUE/FALSE
i tried using perl -p -i -e
but the problem is, if instead of "tab" space after 1st column, there is a character or multi character space then this won't work.
perl -p -i -e... (6 Replies)
I have a csv file formatted like this:
2014-08-21 18:06:26,A,B,12345,123,C,1232,26/08/14 18:07and I'm trying to change it to MM/DD/YYYY HH:MM for both occurances.
I have got this:
awk -F, 'NR <=1 {print;next}{"date +%d/%m/%Y\" \"%H:%m -d\""$1 "\""| getline dte;$1=dte}1' OFS="," test.csvThis... (6 Replies)
Hi Team,
Can you help me with writing shell script to printing the list output to 2nd column in HTML file. (2 Replies)
Discussion started by: veereshshenoy
2 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)